I've just got a Jetex DB insert from Demon Tweeks for my system to try and quieten it down a bit as the super loud volume has eventually started to wear off as far as novelty factor goes.

Problem is I'm not sure exactly where in the system it should be positioned (just in front of the backbox maybe?) or which way round it goes! Basically it's a hollow tube with a flaired section at one end, then four holes in it, then it tapers inwards a bit at the other end.

Never used a part like this so any comments that can clarify it would be useful!
See below for a cack diagram of how it looks.....

Cheers!
Jim

 

Just a thought Jim, have you tried asking Demon Tweeks?

 

To be honest no Paul - I think it'd be tricky to get to someone who actually knows. After thinking about how it works though I think it must go inside the backbox, narrow end at the front to basically keep the air inside the backbox a bit longer before it leaves. Just have to figure a means of securing it there seeing as the tailpipe is way wider!

 

That was what I thought yesterday. Do they sell them in various diameters?

 

Yes matey - a few different sizes.

 

My guess is you have got the wrong size. It should fit snug inside your tailpipe, then all you need to do is drill a hole in the underside of the tailpipe and bolt it on secure.